Read and choose. (选出不同类的一个，将序号填在括号里。)
( ) （1）A. older B. smaller C. fever
( ) （2）A. bed B. excited C. sad
( ) （3）A. yesterday B. tomorrow C. trip
( ) （4）A. actor B. mother C. nurse
( ) （5）A. climbed B. sing C. danced
( ) （6）A. red B. green C. chair
( ) （7）A. bought B. saw C. boat